XXth International Conference on Neutrino Physics and Astrophysics
A. de Gouvea
Solving the Solar Neutrino Puzzle with KamLAND and Solar Data
We study what will be learnt about the solar neutrino puzzle and solar
neutrino oscillations once the data from the KamLAND reactor neutrino
experiment (soon to become available) are combined with those from the
current solar neutrino experiments. We find that, in agreement with
previous estimates, if the solution to the solar neutrino puzzle falls
on the LMA region, KamLAND should be able to "pin-point" the right
solution with unprecedented accuracy after a few years of data
taking. Furthermore, the light side (theta < pi/4) can be separated
from the dark side (theta > pi/4) at the 95% confidence level (CL) for
most of the LMA region allowed by the current data at the 99% CL,
while the addition of the KamLAND data need not improve our ability to
limit a sterile component in "solar" oscillations. If KamLAND does not
see an oscillation signal, the solar data would point to the LOW/VAC
regions, while the SMA region would still lurk at the two sigma CL,
meaning we would probably have to wait for Borexino data in order to
finally piece the solar neutrino puzzle.
Based on Phys. Rev. D64, 113011 (2001)
[hep-ph/0107186]